#556FA1
Closest named color: Dull Blue (#49759C). oklch(54.3% 0.085 262.8), rgb(85, 111, 161).
Aa
White text reads best on this color (5.03:1).
About this color
#556FA1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.085 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.024 away. White text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.17:1 |
| White text | 5.03:1 |
Values
| HEX | #556FA1 |
| RGB | rgb(85, 111, 161) |
| HSL | hsl(219, 31%, 48%) |
| OKLCH | oklch(54.3% 0.085 262.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #556FA1 | 5.03:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #556FA1 | 4.17:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #556FA1 text on white | 5.03:1 | AA | Lc 74.7 | Content text, not long reading |
| #556FA1 text on black | 4.17:1 | AA large text | Lc -27.0 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B4C1DA
oklch(80.9% 0.038 263.6)
-
Step 400
400
#8DA1C7
oklch(70.7% 0.06 263.1)
-
Step 500
500
#708AB9
oklch(63.2% 0.077 262)
-
Step 600
600 (this color)
#556FA1
oklch(54.3% 0.085 262.8)
-
Step 700
700
#49608E
oklch(49.1% 0.079 263.4)
-
Step 800
800
#3C4F73
oklch(42.8% 0.065 262.6)
-
Step 900
900
#33415D
oklch(37.6% 0.052 263.7)
-
Step 950
950
#1E2636
oklch(26.9% 0.032 263.8)
#556FA1 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5C73A3 | 0.015 |
| Deuteranopia (no green cones) | #546CA0 | 0.009 |
| Tritanopia (no blue cones) | #377A81 | 0.076 |
| Achromatopsia (no color) | #6F6F6F | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556FA1
#556FA1
oklch(54.3% 0.085 262.8)
- #876B30
#876B30
oklch(54.3% 0.085 83.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #556FA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.024
- Flat Blue #3C73A8 ΔE 0.028
- Muted Blue #3B719F ΔE 0.029
- French Blue #436BAD ΔE 0.032
- Metallic Blue #4F738E ΔE 0.037
- Stormy Blue #507B9C ΔE 0.038
- Cerulean #457B9D ΔE 0.039
- Dusky Blue #475F94 ΔE 0.052
Use #556FA1 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.